South Beloit, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, South Beloit, Illinois had a total population of 7,946, the 268th largest city in Illinois, with a median household income of $78,616, which is 6% lower than the state average. The poverty rate is 8.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.2x.
South Beloit Quick Facts
How South Beloit Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 7,930 | 7,946 | +0.2% |
| Median household income | $81,836 | $78,616 | -3.9% |
| Median home value | $160,800 | $173,000 | +7.6% |
How South Beloit Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
South Beloit Rankings in Illinois
Explore Illinois Rankings
Other Cities in Winnebago County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Rockford | 147,521 | $54,752 | 21.3% | $129,000 |
| Loves Park | 23,502 | $61,868 | 14.4% | $160,400 |
| Machesney Park | 22,630 | $75,489 | 13.7% | $173,700 |
| Roscoe | 10,706 | $93,036 | 5.5% | $227,800 |
| Rockton | 7,974 | $119,058 | 5.5% | $235,400 |
| Cherry Valley | 3,749 | $74,655 | 8.3% | $232,800 |
| Winnebago | 2,981 | $92,614 | 6.6% | $194,000 |
| Lake Summerset | 2,364 | $108,355 | 3.0% | $237,300 |
| Pecatonica | 2,024 | $73,162 | 7.0% | $143,900 |
| Durand | 1,592 | $65,688 | 7.0% | $135,500 |
Cities Similar to South Beloit
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Hillside | 8,084 | $72,320 | $246,800 | 23.8% | 6.6% |
| Glenwood | 8,603 | $77,391 | $198,100 | 39.7% | 10.6% |
| Jerseyville | 7,445 | $73,529 | $143,900 | 19.1% | 12.3% |
| North Riverside | 7,249 | $77,170 | $297,800 | 42.9% | 7.9% |
| Broadview | 7,896 | $64,697 | $252,200 | 17.8% | 9.4% |
Population Overview
South Beloit is a small city located in Illinois, within Winnebago County. The total population is 7,946. It ranks as the 268th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in South Beloit is 36.0 years. This is 8% lower than the state median of 39.0 years.
Economy, Income & Housing
The median household income in South Beloit is $78,616. This is 6% lower than the state median of $83,390. It is also 3% lower than the national median of $80,734. The poverty rate stands at 8.0%. This is 32% lower than the state poverty rate of 11.8%. The unemployment rate is 5.9%. The median home value is $173,000. Housing costs are 34% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.2x, South Beloit is one of the most affordable housing markets in the area. 69.0% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in South Beloit is White (non-Hispanic), making up 76.3% of the population. Hispanic or Latino residents account for 11.5%. The Black or African American population (3.2%) is well below the state average of 13.3%. The Asian population (1.1%) is well below the state average of 5.9%.
Education
28.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 25% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.7%.
Data Sources & Methodology
All demographic data for South Beloit, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Illinois city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of South Beloit, Illinois?
South Beloit, Illinois has a population of 7,946 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in South Beloit, IL?
The median household income in South Beloit is $78,616, which is 3% lower than the national median of $80,734.
What is the poverty rate in South Beloit, IL?
The poverty rate in South Beloit is 8.0%. This means approximately 629 residents live below the federal poverty line.
What is the racial makeup of South Beloit, Illinois?
South Beloit's population is 76.3% White, 3.2% Black, 11.5% Hispanic/Latino, and 1.1% Asian.
What is the median home value in South Beloit, IL?
The median home value in South Beloit is $173,000. The home-value-to-income ratio is 2.2x.
How educated is South Beloit, Illinois?
28.4% of adults (25+) in South Beloit hold a bachelor's degree or higher, and 10.2% hold a graduate or professional degree.